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MBL Radialstrahler 101E MkII loudspeaker

MBL Radialstrahler 101E Mk.II loudspeaker apertura

 

 

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MBL Radialstrahler 101E MkII loudspeaker

MBL Radialstrahler 101E MkII .

Il ricordo degli ascolti delle grandi MBL da pavimento, fatto ormai diversi Top Audio or sono, è ancora vivo in me. E non potrebbe essere altrimenti, poiché il suono del Radiastrahler, montato sui diffusori “importanti” della casa tedesca, è di quelli che non si dimenticano.
E’ evidente che nella sala MBL ascoltai il suono della catena MBL (vi erano sorgenti e amplificazioni MBL), ma il risultato fu, per quattro diversi anni, un riferimento, tanto è vero che la sala che ospitava quei sistemi conquistò, da noi addetti ai lavori, la palma di “sala meglio suonante della mostra”.

 

 

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Il suono

Il suono delle 101 era…era suono allo stato puro. La setosità della riproduzione, la ottima trasparenza, ma soprattutto la ricostruzione scenica che ti faceva stare all’interno dell’evento, producevano una sensazione unica ed emozionante.
A differenza delle altre tipologie di diffusori, gli omnidirezionali e in particolare questi con i trasduttori Radialstrahler forniscono una scena acustica unica per profondità e ariosità. Magari i diffusori ad alta definizione con sorgente line source (array), che non costringono ad un predeterminato punto d’ascolto, possono essere più corretti ed offrire una scena un po’ più naturale, ma va detto che la naturalezza di emissione degli MBL è davvero disarmante.

 

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La sensazione di grande partecipazione all’evento che si sta riproducendo è il punto di forza di questi straordinari strumenti d’ascolto, anche se, personalmente, preferisco una struttura degli esecutori sul palco che rispetti in maniera rigorosa la dislocazione reale degli artisti. Con gli omnidirezionali, tutti e le MBL non fanno eccezione, si percepisce una sensazione di “iperpartecipazione”; è come se il coinvolgimento fosse magnificato per offrire all’ascoltatore una poltrona in mezzo agli esecutori invece che di fronte ad essi.
La bassa efficienza di questi sistemi, di poco superiore agli 80 dB, necessita di amplificazioni molto, molto muscolose e , allo stesso tempo, raffinatissime. Questo comporta, inevitabilmente, un notevole investimento economico. Unica precauzione, ma credo che sia quasi superfluo dirlo, è relativa alla necessità di fornire molta aria intorno al sistema omnidirezionale.

 

 

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Il costo

Circa 70.000 euro per questi omnidirezionali sono, io credo, una cifra ragionevole per via dello straordinario progetto, della ineccepibile realizzazione tecnica e dell’eccellente risultato sonoro.
Le MBL 101 E MKII si posizionano ad un livello piuttosto alto riguardo le prestazioni fornite e, se adeguatamente abbinate con i partner giusti, forniranno emozioni a non finire e una classe sonica degna dei prodotti di alto lignaggio.
Bruno Fazzini

 

 

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MBL web site

MBL Radialstrahler 101E MkII . The “Radialstrahler“ ensures equitable distribution of energy throughout the whole room and thus works in perfect harmony with its environment. But it’s in the lower middle tone range that the mbl 101 E MKII really shows its special qualities. This is the range in which the loudspeaker connection to the air in the room is as problematic as it is decisive for the quality of the sound because it is the point that determines the naturalness and flexibility of the sound.

And as true art is created by attention to details, we have given the mbl 101 E MKII two different loudspeaker cables which enable two separate entry points to the chassis. At the same time a variety of different materials allows you to choose further options. All this means that the mbl 101 E MKII achieves an incredible level of flexibility. Our masterpiece brings music together with your home environment in perfect harmony.

 

 

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Stereophile

MBL Radialstrahler 101E Mk.II loudspeaker
By Michael Fremer  Posted: Apr 6, 2012

Take a casual look at the Mk.II edition of MBL’s Reference 101E Radialstrahler loudspeaker, and you won’t immediately see what’s new compared with the original version, which I reviewed in October 2004. But the Mk.II has a shorter, sleeker bass cabinet, designed to, among other things, slightly lower the stack of omnidirectional drivers it supports. While the many other major revisions to this familiar and fascinating loudspeaker can’t be seen, it’s fair to say that, from the ground up, the Reference 101E Mk.II is a new loudspeaker in design, if not in concept.

 

 

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Since reviewing the original Reference 101E, I’ve heard them in owners’ listening rooms and dealer setups around the world, some of those contexts optimized for the speakers in ways a reviewer’s all-purpose room simply can’t be. The results were spatially majestic and musically compelling. Ideally, this omnidirectional speaker should be placed well away from side and rear walls—something that is not possible in my room. Nonetheless, that didn’t prevent the original 101E from revealing its unique virtues in my room—and, as with all loudspeakers, their limitations. Two RPG Skyline diffuser panels I’ve recently installed on the front wall have proved beneficial for the speakers I’ve subsequently heard in my room, but especially for the 101E Mk.IIs….See more

 

 

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The Absolute Sound.

MBL 101 E RADIALSTRAHLER OMNIDIRECTIONAL LOUDSPEAKER
by Jonathan Valin Mar 08th, 2011
The very first thing HP told me when I started writing for this magazine ten years ago was never to paint myself in a corner with a rave. “Always leave room for the next great thing that comes your way,” said he, “because sooner or later it will.”

 

 

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In this instance, it’s come far too soon for comfort. Just as I finished my, uh, rave of the Kharma Midi-Exquisite/CeSb 1.0 loudspeaker system in Issue 151, these space-age contraptions from Meletzky Berlin Loudspeaker (MBL) showed up to make me eat my words.
Well, “eat” is too strong a word. Perhaps “rechew” is better. The Kharma Midi-Exquisites will remain in my listening room for the reasons outlined in Issue 151. But the MBL 101 Es have now joined them—and in several ways superseded them—as my references.

 

 

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Before I start singing the 101 E’s praises (and pointing out its peculiarities), let me talk a little about how the speakers work, since they work differently than just about every other loudspeaker I’ve auditioned. The MBL 101 Es are omnidirectional speakers, meaning they radiate sound throughout a true 360 degrees. The folks at MBL like to point out that musical instruments are also omnidirectional radiators, which is true, although unlike the 101 Es musical instruments do not radiate equal energy in all directions.

 

 

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MBL

The way MBL gets its speakers to radialstrahl (emit a circular signal) involves a nifty bit of thinking from MBL founder Wolfgang Meletzky (in cooperation with Professors Josef Sternberg and Herbert Fritz of the Institute for Aeronautics and Aerospace at the Technical University of Berlin), and a just as nifty bit of execution by MBL’s resident engineering genius, Juergen Reis. To take the Radialstrahlers’ tweeter as an example, the driver’s “motor”—a fairly conventional magnet and voice coil—is seated horizontally on the chassis, like a dynamic speaker sitting face-up on a stand. Instead of being attached to a paper or plastic cone, however, this magnet/voice coil is wired to a sheaf of slightly bent, carbon-fiber petals (what MBL calls “lamellas”) that are arrayed vertically in a circle, rather like a segmented orange standing on its stem, and then glued at their tops into a thrust bearing. As the voice-coil moves up and down, the lamellas of the spherical driver are driven, accordion-like, in and out, producing sound throughout 360 degrees. A true—dare I say it?—pulsating sphere…. See more

 

 

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Sound and Vision

MBL 101E Mk II Speaker
By Scott Wilkinson • Posted: Jul 16, 2010

Over a year ago, I profiled the amazing 101 X-treme speaker system from MBL. If you don’t have a quarter-million dollars or a floor capable of supporting its 3600-pound bulk, consider the newly refined 101E Mk II….See more

 

 

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http://www.unitedhomeproducts.com/mbl_speakers.htm
MBL Audio Speakers
A sound like angels singing!

he technological tour de force that has continually redefined audio playback for over 30 years. MK II’s are the refined version of the earlier 101e Radialstrahler which garnered worldwide recognition as a truly great and classic loudspeaker. A speaker that is equally competent at reproducing the delicacy of a string quartet and the bone crushing transient dynamics of a rock performance….See more

 

 

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Jadis

The technological tour de force that has continually redefined audio playback for over 30 years. MK II’s are the refined version of the earlier 101e Radialstrahler which garnered worldwide recognition as a truly great and classic loudspeaker. A speaker that is equally competent at reproducing the delicacy of a string quartet and the bone crushing transient dynamics of a rock performance…..See more

 

 
Omnidirectional sound production

A signal applied to the bottom-mounted voice-coil of each of the three visible circular-section drive-units uniformly flexes each driver’s array of vertical petal-like segmants to produce a uniform, 360° horizontal wave launch. This means that, unlike with a traditional driver, both the frequency and power response are uniform wherever you sit…..See more
Description:
Four-way floorstanding loudspeaker.
Three omnidirectional bending-mode
drive-units:
24-segment carbon-fiber tweeter,
12-segment carbon-fiber upper-midrange unit,
12-segment aluminum lower-midrange unit;
plus, in separate enclosure, bandpass-loaded 12″, aluminum-cone woofer.

Crossover frequencies: 105Hz, 600Hz, 3.5kHz (Linkwitz-Riley, fourth-order).
Acoustic center: 45″ (1140mm) from floor.
Frequency range: 24Hz–40kHz. Sensitivity: 81dB/2.83V/m. Nominal impedance: 4 ohms.
Power handling: 320–500W continuous, 2.2kW peak.
Dimensions: 67″ (1720mm) H by 16″ (410mm) W by 18″ (460mm) D.

Weight: 176 lbs (80kg).
Finishes: Piano Black, Piano Silver, Piano White, with chrome or gold-plated accents.

Price $70,500/pair

 

 

 

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